Form field auto fill and remember input content

You will need something into this direction…

import {sendEmail, sendEmailWithRecipient} from 'backend/email';
import {local} from 'wix-storage';

let dbField = [], fieldValue = []; 

$w.onReady(function () {let data = [];
    let memItems = local.getItem("memory"); console.log("MEMORY: ", savedData);

    //---MEMORY-CONTROLLER.....
    let toBeMemorized =  ["opdrachtTitle", "eMail"]; //<--- put in here, which data to be memorized!
    //----------------------------------------------------------------------
    const subject =     `Nieuwe opdracht geplaatst door ${$w("#input33").value}`;
    //-----------------------------------------------------------------------
    const recipient =   $w("#input34").value;    
    //-----------------------------------------------------------------------
    dbField[0] = "opdrachtTitle";       fieldValue[0] = $w("#input27").value;
    dbField[1] = "functieTitle";        fieldValue[1] = $w("#input28").value;
    dbField[2] = "omschrijving";        fieldValue[2] = $w("#textBox3").value;
    dbField[3] = "eMail";               fieldValue[3] = $w("#input34").value;
    //-----------------------------------------------------------------------    
    const body = `Samenvatting van aangeboden opdracht via Talent Trade
    \rOpdracht titel:${dbField[0]}
    \rFunctie titel:${dbField[1]}
    \rOmschrijving:${dbField[2]}
    \rE-mail:${dbField[3]}    
    Voor wijzigingen of annuleren (24u van tevoren kosteloos wanneer de opdracht al is geaccepteerd) stuur je een reply op deze mail`;
    //-----------------------------------------------------------------------
    
    for (let a = 0; a < dbField.length; a++) {
        //data[dbField[a]] = fieldValue[a];

        for (let b = 0; b < toBeMemorized.length; b++) {
            //---MEMORY-FUNCTION for some fields...
            if (dbField[a] === toBeMemorized[b]) {
                data.push({[dbField[a]]: fieldValue[0]})
            }
            if(a===dbField.length-1) {
                local.setItem("memory", JSON.stringify(data));
            }
        }        
    }   
    //-----------------------------------------------------------------------
    $w("#dataset1").onAfterSave(()=>{sendFormData(subject, body, recipient)});
    //-----------------------------------------------------------------------
   
});

function sendFormData(subject, body, recipient) {     
    sendEmailWithRecipient(subject, body, recipient).then(response => console.log(response)); 
    sendEmail(subject, body).then(response => console.log(response));
}

You will have to expand and optimize the shown code eventually. Give it a try.